Title :
Measurement of band structures of photonic bandgap materials by picosecond optoelectronic techniques
Author :
Lin, S.Y. ; Robertson, W.M. ; Arjavalingam, G.
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
It is now well established that electromagnetic waves in a periodic dielectric array (photonic crystal) exhibit band structure where regions of allowed modes are separated by forbidden frequency gaps (band gaps). In this talk, we discuss the application of ultrafast optoelectronics to the measurement of band structure in two-dimensional photonic crystals. For the first time, the imaginary wave-vector dispersion in the bandgap region is measured using the coherent microwave transient spectroscopy (COMITS) technique. Also, by constructing the photonic analog of a semiconductor quantum well, we observe quantized states in the photonic band gap
Keywords :
band structure; energy gap; high-speed optical techniques; microwave spectra; microwave spectroscopy; optical constants; photonic band gap; semiconductor quantum wells; 15 to 140 GHz; COMITS; band gaps; band structure; band structures; coherent microwave transient spectroscopy; electromagnetic waves; forbidden frequency gaps; imaginary wave-vector dispersion; periodic dielectric array; photonic band gap; photonic bandgap materials; photonic crystal; picosecond optoelectronic techniques; quantized states; semiconductor quantum well; ultrafast optoelectronics; Crystalline materials; Dielectric materials; Dielectric measurements; Dispersion; Electromagnetic measurements; Electromagnetic scattering; Frequency; Periodic structures; Photonic band gap; Photonic crystals;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1993. LEOS '93 Conference Proceedings. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-1263-5
DOI :
10.1109/LEOS.1993.379441
